summaryrefslogtreecommitdiff
path: root/include/sound
diff options
context:
space:
mode:
authorTakashi Iwai <tiwai@suse.de>2022-07-28 14:59:45 +0200
committerTakashi Iwai <tiwai@suse.de>2022-07-29 12:57:12 +0200
commit4a971e84a7ae10a38d875cd2d4e487c8d1682ca3 (patch)
tree750576e84d71b0f772fdb1c267e340ede1377de4 /include/sound
parent96b097091c66df4f6fbf5cbff21df6cc02a2f055 (diff)
downloadlwn-4a971e84a7ae10a38d875cd2d4e487c8d1682ca3.tar.gz
lwn-4a971e84a7ae10a38d875cd2d4e487c8d1682ca3.zip
ALSA: control: Use deferred fasync helper
For avoiding the potential deadlock via kill_fasync() call, use the new fasync helpers to defer the invocation from the control API. Note that it's merely a workaround. Another note: although we haven't received reports about the deadlock with the control API, the deadlock is still potentially possible, and it's better to align the behavior with other core APIs (PCM and timer); so let's move altogether. Link: https://lore.kernel.org/r/20220728125945.29533-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound')
-rw-r--r--include/sound/control.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sound/control.h b/include/sound/control.h
index fcd3cce673ec..eae443ba79ba 100644
--- a/include/sound/control.h
+++ b/include/sound/control.h
@@ -109,7 +109,7 @@ struct snd_ctl_file {
int preferred_subdevice[SND_CTL_SUBDEV_ITEMS];
wait_queue_head_t change_sleep;
spinlock_t read_lock;
- struct fasync_struct *fasync;
+ struct snd_fasync *fasync;
int subscribed; /* read interface is activated */
struct list_head events; /* waiting events for read */
};